Columbium pentafluoride
[建] 五氟化铌
🧩 词语组成解析
n. [化]铌
五氟化物
🗣️ 情景例句
and sometimes there isn't.
有时候没有。
Have but few friends though many acquaintances.
朋友要少，熟人要多。
His answer was to lift the vessel out of the water by making it ride on a cushion of air,
他的解决办法是把船体提离水面，让船在一个气垫上行驶，